<template>
  <view>
    <view class="goods-detail-container" v-if="goodsInfo.goods_price  ">
      <!-- 轮播图区域 -->
      <swiper :indicator-dots="true" :autoplay="true" :interval="3000" :duration="1000">
        <swiper-item v-for="(item, i) in goodsInfo.pics" :key="i">
          <img class="swiper-img" :src="item.pics_big" alt="" @click="imgPreview(i)">
        </swiper-item>
      </swiper>
      <!-- 商品详情 -->
      <view class="goods-info">
        <view class="goods-price">
          ￥{{goodsInfo.goods_price}}
        </view>
        <view class="goods-detail">
          <!-- 商品名字 -->
          <view class="goods-name">
            {{goodsInfo.goods_name}}
          </view>
          <!-- 收藏 -->
          <view class="goods-coll">
            <uni-icons type="star" size="18" color="gray"></uni-icons>
            <text>收藏</text>
          </view>
        </view>
        <view class="goods-freight">
          快递：免运费
        </view>
        <!-- 商品大图 -->
        <rich-text :nodes="goodsInfo.goods_introduce"></rich-text>
      </view>
      <!-- 底部按钮，用户行为 -->
      <view class="goods-nav">
        <uni-goods-nav :fill="true" :options="options" :buttonGroup="buttonGroup" @click="onClick"
          @buttonClick="buttonClick" />
      </view>
    </view>
  </view>
</template>

<script>
  import {
    mapState,
    mapMutations,
    mapGetters
  } from "vuex"
  export default {
    computed: {
      ...mapState("m_cart", []),
      ...mapGetters("m_cart", ["total"])
    },
    watch: {
      total: {
        handler(newVal) {
          const findResult = this.options.find(x => x.text === "购物车")
          findResult.info = newVal
        },
        immediate: true
      }
    },
    data() {
      return {
        goodsInfo: {},
        // 左侧按钮组的配置对象
        options: [{
          icon: 'shop',
          text: '店铺'
        }, {
          icon: 'cart',
          text: '购物车',
          info: 0
        }],
        // 右侧按钮组的配置对象
        buttonGroup: [{
            text: '加入购物车',
            backgroundColor: '#ff0000',
            color: '#fff'
          },
          {
            text: '立即购买',
            backgroundColor: '#ffa200',
            color: '#fff'
          }
        ]
      };
    },

    onLoad(options) {
      this.getGoodsInfo(options.goods_id)
    },

    methods: {
      ...mapMutations("m_cart", ["addCart"]),
      // 获取商品详情数据
      async getGoodsInfo(id) {
        const {
          data: res
        } = await uni.$http.get("/api/public/v1/goods/detail", {
          goods_id: id
        })
        // 请求失败
        if (res.meta.status !== 200) {
          return uni.$showMsg()
        }
        // 请求成功
        this.goodsInfo.goods_introduce = res.message.goods_introduce.replace(/<img /g,
          "<img style='display: block;'").replace(/webp/g, "jpg");
        this.goodsInfo = res.message
        uni.$showMsg("数据请求成功！")
      },

      // 预览轮播图图片
      imgPreview(i) {
        uni.previewImage({
          current: i,
          urls: this.goodsInfo.pics.map(x => x.pics_big)
        })
      },

      // 跳转到购物车页面
      onClick(e) {
        if (e.content.text === "购物车") {
          uni.switchTab({
            url: '/pages/cart/cart'
          });
        }
      },

      // 加入购物车按钮
      buttonClick(e) {
        if (e.content.text === "加入购物车") {
          const goods = {
            goods_id: this.goodsInfo.goods_id,
            goods_price: this.goodsInfo.goods_price,
            goods_name: this.goodsInfo.goods_name,
            goods_count: 1,
            goods_small_logo: this.goodsInfo.goods_small_logo,
            goods_state: true,
          }
          this.addCart(goods)
        }
      }
    }
  }
</script>

<style lang="scss">
  .goods-detail-container {
    padding-bottom: 50px;

    swiper {
      height: 750rpx;

      .swiper-img {
        width: 100%;
        height: 100%;
      }
    }

    .goods-info {
      padding: 10px;
      padding-right: 0;

      .goods-price {
        margin: 10px 0;
        color: #C00000;
      }

      .goods-detail {
        display: flex;
        justify-content: space-between;

        .goods-name {
          font-size: 13px;
          margin-right: 10px;
        }

        .goods-coll {
          width: 120px;
          font-size: 12px;
          display: flex;
          flex-direction: column;
          align-items: center;
          justify-content: center;
          border-left: 1px solid #efefef;
          color: gray;
        }
      }

      .goods-freight {
        font-size: 12px;
        color: gray;
        margin: 10px 0;
      }
    }

    .goods-nav {
      position: fixed;
      bottom: 0;
      left: 0;
      width: 100%;
    }
  }
</style>